피스톤 펌핑 위상이 텐덤형 사판식 액셜 피스톤 펌프의 진동, 소음에 미치는 영향에 관한 연구(2)

A Study on Effects of Piston Pumping Phase on Vibration and Noises of Tandem Swash Plate Type Axial Piston Pump(2)

Previous researches and experiments have already verified that the primary noise source of high pressure tandem axial thpe piston pump is fluid-borne noise from the process of oil distribution between the kidney-shaped port and valve plate. So, many researchers have improved pressure gradients and reduced sound levels by applying pre-compression and pre-decompression metering grooves to valve plate. In practice however, the sound level of th high pressure tandem axial type piston pump is still undesirable. This paper testified the effect of pumping phase of the piston on vibration and noise of th high pressure tandem axial type piston pump on the best of theoretical research in $this^(1)$. Therefore considering the pumping phase of the piston when assembling the tandem axial type piston pump, it is possible to reduce 1.5~2[dB]of sound level.